Square-turn tractor.



N. F-JEw/ELL.

SQUA'ZE TURN TRACTOR.

MVLICA 'ION FILED JUNE 5, 19 v Patentd Mar. 14, 1916.

3 SHEETS SHEET I.

WL ME 5w E H N. NEWELL SQUARE TURN TRACTOR.

APPLICATION FILED JUNE 6. 1914.

Patehted Mar. 14,1916.

3 SHEETS-SHEET 3.

- n uauto'a vN, H aw E ma" in the county of Elkhart and 6 UNITED STATES PATENT ()FICE.

NAT NEWELL, OF ELKHART, INDIANA.

SQUARE-TURN TRACTOR.

To all whom it may concern:

Be it known that I, NAT NEWELL, citizen of the United States, residin at Elkhart,

tate of Indiana, have invented certain new and useful Improvements in Square-Turn Tractors, of

Y which the following is a specification.

The .present invention relates to certain new and useful improvements in tractors such as are more articularly designed for use in plowing fiel s and performing similar agricultural operations, the object of the invention being to provide a tractor of this charact iwhich embodies novel features of condfi tion whereby it can be turned squarely around at the end of the field without causing the main drive wheels to travel unnecessarily on plowed ground.

A further object of the invention is to provide a square turn tractor which is comparatively simple and inexpensive in its construction, which is at all times under the complete control of the operator, which can be used economically and effectively in-plowing fields of comparatively small acreage,

and which can be readily turned at the ends of the field without traveling upon plowed ound.

With these and other objects in view, the invention consists in certain novel combinations and arrangements of the parts as will more fully appear as the description proceeds, the novel features thereof being pointed out in the appended claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which Figure 1 is a top plan view of a square turn tractor constructed in accordance with the invention, portions being broken away and shown in section to illustrate more clearly the details of construction. Fig. 2 is a side elevation of the square turn tractor, portions being broken away and shown in section. Fig. 3 is a rear View of the tractor with portions broken away and shown in section. Fig. 4 is an enlarged longitudinal sectional view through the fork member within which the steering wheel is mounted, the stem at the upper end of the fork memher being broken away, and Fig. 5 is an enlar ed transverse sectional view, through the for member and steering wheel, the stem of the fork member being broken away.

Corresponding and like parts are referred Patented Mar. 14, 1916.

Application filed June 6, 1914. Serial No. 843,437.

to in the following description and indicated 1n all the views of the drawings by the same reference characters.

The main frame of the tractor may be of any suitable construction, although for the purpose of illustration it is shown in the present instance as formed of two spaced and longitudinally disposed I beams 1 which are connected toward the forward end of the tractor by a suitable platform or bed 2 upon which the engine 3 is mounted, the rear ends of the I beams being converged toward each other at 1 and connected by the to and bottom plates 4. These plates 4 may e secured 1n position in any suitable manner as by meansof the bolts or fastening members 5. The engine 3 which is mounted upon the bed 2 may be of an suitable construction, and

the engine sha t 6 is provided with "a fly frame at a point to the rear of the gasolene tank 9 and slightly in front of the seat 11 which is provided at the rear end of the frame.

A short horizontal drive shaft 12 is arranged in front of the engine 3 and in aline-.

ment with the engine shaft 6. A suitable clutch 13 is provided for locking the short drive shaft 12 with the engine shaft, said clutch being controlled by a lateral arm 14 upon a slide 14 which extends along the top 0 the main frame at one side thereof and 1s connected to a clutch lever 15 arranged, adjacent to the operatorls seat 11 so as to be conveniently manipulated by a person sitting upon the same.

The front end of the short horizontal shaft 12 is connected by the bevel gearing 16 to a short vertical shaft 17 which extends downwardly andisconnected by some conventional form of differential gearing 18 to a transverse ack shaft 19 which is journaled upon suitable brackets 20.- Opposite ends of the transverse jack shaft 19 are provided with small sprocket wheels 21 which are conwheels 23' upon the main traction or drive wheels 24, one of which is arranged at each side of the main frame. It will thus be obvious that when the clutch 13 is closed so as to lock the short horizontal drive shaft nipulatedan thrown at an angle-,an'd'this; is readily accomplished through the gearing by turning the 'steering,

a just described wheel 40.

12 with the engine shaft, power will be" The two traction wheels 24 are designed to be arrangedat different elevations so that.

one of the wheels will travel upon unplowed is mounted upon an .axle which is carried by a bracket 26 and has a fixed position, while j the op osite wheel 24' is mounteduup'onanj i 'behind; the main traction wheels.

plows are connected by links '58 to bell crank axle. 2 which is carried-by fthef-arm of'a crank member 28, the-o osite armfoftlie crank member being a writable-within) a bracket 29 and held ri'gidly'in an adjusted position by clamping'nuts 30. ,,j,Witlr'fthis construction it will 1 be, obvious; that by swinging the crank member 28 upand down the traction wheel 24 Jupon 1theax1e 27. can. be raised or loweredai'a'sffound-necessary A single guide' orcasterqwheel 1313s v vided at the rear e di'pf gthe'tractoi'hthfe said '25. 32 whichconnectsthektwo.armebfaf0fk133.

' Projecting upwardly ther rk 3 and'zf' arranged directly-fever}the-[center of the guide wheel 31? isa tu'bularstem 34jwbieh'i'sf suitably 'journaled-iupbn v ,,the' before men.- tioned plates 4 so. to-.b'e turned about a vertical axis. 'Ihe 'upperjend of the tubular stem 34 is provided" I with afwo'rm' wheel 85' which meshes with aworm '36 .upon'a -'hori zontal' shaft 37 i which: extends forwardly and is connected byQsuitabIe earing- -38 to, the shaft 390f'a'steerin.jw eel"40. The guide wheel 31 normally: I

the furrows, although when turning the wheel 31 being normallyjfloe'se{uponlai shaft tractor this ide .fwh eel- 3l must be me,

Extendin axially I through the tubular stem 34 of t e fork 33, and j'ournaled-within the said stem. is a vertical shaft 41,-the upa per end of which is connected by'the bevel gearing 42 to a forwardly extending horizontal shaft 43 which is connected by a suit- 1 able clutch 44 to a short shaft 45. An inclined shaft 46 connects the short shaft 45 to the rear end of the engine shaft 6, suitable universal joints 47 being provided at oppolever 48.

The lower end of .the vertical shaft 41' a countershaft 50 which extends downwardly on one side of the guide or caster wheel 31 and is journaled upon the top of the fork and a lateral arm 51 projecting from same gine throu h the gearing.

Api'er'by; the first row tractor whee ollows-in. one of;

same'time turned into a position at substan- 'atiallyright angles to, the direction'in which the tractor has been travelingthis being ac complished -Lwheel 40. clutch 44 by pressing his foot upon the foot 'lever48' and thereby transmits power from ,position so thatthe f tively driven from t 0 engine. This serves to swing the entireftractor squarely around "without the necessity 'of causing the main f frame tractor wheels 24 to travel upon site ends of the shaft 46. The clutch 44 is x normally open and-is controlled by .a foot one of the arms thereof. The lower applied to the'hub of the guide wheel 31, conventionalclutch rollers 55 being arranged within cam recesses 56 in the periphery of the collar 54 so as to permit the guide wheel '31 -.normally to turn freely, but look the sleeve 53.with 'th'ecollar 54 and guide wheel 31 when power is transmitted I Plows 5 are suitably connected "to the forward end of the main frame so as toriifail ese levers 59, said bell crank levers being in turn awl- -and ratchet mechanism 63 is provided or lock iiigthe lever 61 in an adjusted posilillthebperation of the device one tractor wheel 24runs in a furrow, while the other ,-.tractorwheel 24 runs on un lowed land. ,Theguideor caster wheel 31 allows in the @z'rurrowamde by the second ftlactorrfiflheplows are attache close to the tractor-wheels so. that] the; furrow turned Flow 2 'usb misses the fur- W on the end of the field is reached and it is desired to turn the low of the tractorcompletely around, the operator ma and-shut oif ower from the main tractors '34; The gui e or caster wheel 31 is at the by suitably rotating the steering he operator, nexti closes the the enginerto the vertical countershaft 50 of of this sleeve 53 ,b power from the engine moves the roller '0 utches 55 into operative 'de wheel 31 is posiis aghin turned into a. position parallel to they no of movement of the tractor, the

clutch 44 opened, and the clutch 13 again closed." Th1s operation is repeated at each end of the furrow, and with the present construction short and square turns can be made without running the heavy drive wheels over plowed ground. I

Having thus described the invention, what from the en- "the fork33 and. the sleeve 53. The rotation I claim as new and desire to secure by Letwheel, an upright shaft extendin through;

the tubular stem and journaledt erein, an upright countershaft arranged within the arms of the fork and journaled upon the fork at one side of the main wheel, gearing between the upper. end of the countershaft and the lower end of the upright shaft, a

gear wheel rigid with the lower end of the countershaft and meshing with the before 20 mentioned gear wheel mounted upon the axle and having a clutch connection with the main wheehmeans for applying power to the upper end of the upright shaft, and

gearing applied to the tubular stem for ro 25 tating the fork.

In testimony whereof I aflix my signature in presence of two witnesses. Y

AT NEWELL. I Witnesses: v 1

EDWARD B. ZIGLER, T. A. Kosxr. 

